1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "IconLoader.h"
#include "Document.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "IconDatabase.h"
#include "Logging.h"
#include "ResourceHandle.h"
#include "ResourceLoadScheduler.h"
#include "ResourceResponse.h"
#include "ResourceRequest.h"
#include "SharedBuffer.h"
#include "SubresourceLoader.h"
#include <wtf/UnusedParam.h>
#include <wtf/text/CString.h>
using namespace std;
namespace WebCore {
IconLoader::IconLoader(Frame* frame)
: m_frame(frame)
, m_loadIsInProgress(false)
{
}
PassOwnPtr<IconLoader> IconLoader::create(Frame* frame)
{
return adoptPtr(new IconLoader(frame));
}
IconLoader::~IconLoader()
{
}
void IconLoader::startLoading()
{
if (m_resourceLoader)
return;
// Set flag so we can detect the case where the load completes before
// SubresourceLoader::create returns.
m_loadIsInProgress = true;
ResourceRequest resourceRequest(m_frame->loader()->iconURL());
resourceRequest.setPriority(ResourceLoadPriorityLow);
RefPtr<SubresourceLoader> loader = resourceLoadScheduler()->scheduleSubresourceLoad(m_frame, this, resourceRequest);
if (!loader)
LOG_ERROR("Failed to start load for icon at url %s", m_frame->loader()->iconURL().string().ascii().data());
// Store the handle so we can cancel the load if stopLoading is called later.
// But only do it if the load hasn't already completed.
if (m_loadIsInProgress)
m_resourceLoader = loader.release();
}
void IconLoader::stopLoading()
{
clearLoadingState();
}
void IconLoader::didReceiveResponse(SubresourceLoader* resourceLoader, const ResourceResponse& response)
{
// If we got a status code indicating an invalid response, then lets
// ignore the data and not try to decode the error page as an icon.
int status = response.httpStatusCode();
LOG(IconDatabase, "IconLoader::didReceiveResponse() - Loader %p, response %i", resourceLoader, status);
if (status && (status < 200 || status > 299)) {
ResourceHandle* handle = resourceLoader->handle();
finishLoading(handle ? handle->firstRequest().url() : KURL(), 0);
}
}
void IconLoader::didReceiveData(SubresourceLoader* unusedLoader, const char*, int unusedSize)
{
#if LOG_DISABLED
UNUSED_PARAM(unusedLoader);
UNUSED_PARAM(unusedSize);
#endif
LOG(IconDatabase, "IconLoader::didReceiveData() - Loader %p, number of bytes %i", unusedLoader, unusedSize);
}
void IconLoader::didFail(SubresourceLoader* resourceLoader, const ResourceError&)
{
LOG(IconDatabase, "IconLoader::didFail() - Loader %p", resourceLoader);
// Until <rdar://problem/5463392> is resolved and we can properly cancel SubresourceLoaders when they get an error response,
// we need to be prepared to receive this call even after we've "finished loading" once.
// After it is resolved, we can restore an assertion that the load is in progress if ::didFail() is called
if (m_loadIsInProgress) {
ASSERT(resourceLoader == m_resourceLoader);
ResourceHandle* handle = resourceLoader->handle();
finishLoading(handle ? handle->firstRequest().url() : KURL(), 0);
}
}
void IconLoader::didReceiveAuthenticationChallenge(SubresourceLoader*, const AuthenticationChallenge&)
{
// We don't ever want to prompt for authentication just for a site icon, so
// implement this method to cancel the resource load
m_resourceLoader->cancel();
}
void IconLoader::didFinishLoading(SubresourceLoader* resourceLoader, double)
{
LOG(IconDatabase, "IconLoader::didFinishLoading() - Loader %p", resourceLoader);
// Until <rdar://problem/5463392> is resolved and we can properly cancel SubresourceLoaders when they get an error response,
// we need to be prepared to receive this call even after we've "finished loading" once.
// After it is resolved, we can restore an assertion that the load is in progress if ::didFail() is called
if (m_loadIsInProgress) {
ASSERT(resourceLoader == m_resourceLoader);
ResourceHandle* handle = resourceLoader->handle();
finishLoading(handle ? handle->firstRequest().url() : KURL(), m_resourceLoader->resourceData());
}
}
void IconLoader::finishLoading(const KURL& iconURL, PassRefPtr<SharedBuffer> data)
{
// When an icon load results in a 404 we commit it to the database here and clear the loading state.
// But the SubresourceLoader continues pulling in data in the background for the 404 page if the server sends one.
// Once that data finishes loading or if the load is cancelled while that data is being read, finishLoading ends up being called a second time.
// We need to change SubresourceLoader to have a mode where it will stop itself after receiving a 404 so this won't happen -
// in the meantime, we'll only commit this data to the IconDatabase if it's the first time ::finishLoading() is called
// <rdar://problem/5463392> tracks that enhancement
if (!iconURL.isEmpty() && m_loadIsInProgress) {
LOG(IconDatabase, "IconLoader::finishLoading() - Committing iconURL %s to database", iconURL.string().ascii().data());
m_frame->loader()->commitIconURLToIconDatabase(iconURL);
// Setting the icon data only after committing to the database ensures that the data is
// kept in memory (so it does not have to be read from the database asynchronously), since
// there is a page URL referencing it.
iconDatabase().setIconDataForIconURL(data, iconURL.string());
m_frame->loader()->client()->dispatchDidReceiveIcon();
}
clearLoadingState();
}
void IconLoader::clearLoadingState()
{
m_resourceLoader = 0;
m_loadIsInProgress = false;
}
}
|
